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"Mary" <mmelanson2@cogeco.ca> wrote in message
news:rZP1h.175317$sS1.82087@read1.cgocable.net...
> What does this code mean??? HELP!!!!!!!!!!!!!!!!!!!!!!!
>
>

You should sign up for a free account on the Hyundai service web site. It
has a wealth of information for folks who do their own work, or just simply
want to know. Go out to hmaservice.com and sign up. You will need to use
IE as Mozilla does not work with the site.

From the hmaservice.com web site...

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FAILURE CONDITIONS [FOR P0133]

(FOR P0133)
The ECM will set P0133 and MIL will turn on if the ECM does not sense the
following conditions during two driving cycles:

1.. Over a period of 2 minutes, the ECM must sense a fuel compensation
factor greater 85% or less than 95%:
2.. The ECM must make some correction in the air/fuel ratio when:
a.. Engine RPM is between 1600 and 3200 RPM.
Engine load range is between 1.35 and 3.4 milliseconds.
Catalyst temperature is above 372°C (702°F).
System is in closed loop.

This code indicates the engine air fuel ratio is not being adjusted by the
front oxygen sensor signal or the ECM as expected to do so, or not adjusted
as often as expected to do so once the engine is warmed or under normal
engine use.

***********************************************

Also from the same site...

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There is a TSB # 06-36-004 that deals with this code. It advises to verify
the integrity of the front exhaust pipe between the front and rear oxygen
sensors. A leak in the pipe can affect the ECM diagnostic logic for the
front oxygen sensor.

--

-Mike-
mmarlowREMOVE@alltel.net